Add a -s flag for the same functionality as strace. Introduce a Name

type which is a String type that has no -s limitations applied to it.
Change most Strings in the code to Names and add a few extra syscalls,
namely munmap, read, rename and symlink.  This was enough to facilitate
following file descriptor allocations in the code more easily and
getting a hint at what's being read/written from/to files.  More
syscalls should really be added.

While here, fix an off-by-one bug in the buffer truncation code and
add a fflush so that truss's output reflects the syscall that the
program is stuck in.

Sponsored by:	Sophos/Activestate
MFC after:	2 weeks

1 files changed, 2 insertions, 2 deletions

diff --git a/usr.bin/truss/amd64-linux32.c b/usr.bin/truss/amd64-linux32.c
index 01703b5..9833829 100644
--- a/usr.bin/truss/amd64-linux32.c
+++ b/usr.bin/truss/amd64-linux32.c
@@ -200,7 +200,7 @@ i386_linux_syscall_entry(struct trussinfo *trussinfo, int nargs) {
 	      i < (fsc.nargs - 1) ? "," : "");
 #endif
       if (sc && !(sc->args[i].type & OUT)) {
-	fsc.s_args[i] = print_arg(Procfd, &sc->args[i], fsc.args, 0);
+	fsc.s_args[i] = print_arg(Procfd, &sc->args[i], fsc.args, 0, trussinfo);
       }
     }
 #if DEBUG
@@ -312,7 +312,7 @@ i386_linux_syscall_exit(struct trussinfo *trussinfo, int syscall_num __unused)
 	if (errorp)
 	  asprintf(&temp, "0x%lx", fsc.args[sc->args[i].offset]);
 	else
-	  temp = print_arg(Procfd, &sc->args[i], fsc.args, retval);
+	  temp = print_arg(Procfd, &sc->args[i], fsc.args, retval, trussinfo);
 	fsc.s_args[i] = temp;
       }
     }